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An Imperial Japanese Navy aircraft carrier strike force under Kakuji Kakuta launched air attacks over two days against the Dutch Harbor Naval Base and Fort Mears in Dutch Harbor, Alaska. The attacks inflicted moderate damage on the US bases, killing 78 and destroying 14 aircraft for the loss of 10 Japanese dead and 8 aircraft.in wikipedia

In an attempt to lure the US Pacific Fleet’s few remaining aircraft carriers into a trap, the Imperial Japanese Navy launched an offensive against Midway Atoll. Warned of Japanese plans by its code-breakers, the US was prepared for the attack and successfully ambushed the Japanese force, sinking all four of its major aircraft carriers - Akagi, Kaga, Soryu, and Hiryu - and a heavy cruiser for the loss of just the carrier Yorktown and a destroyer.in wikipedia